解决方法
你试过viewWillTransitionToSize方法吗？这用于通知容器其视图的大小即将更改.
Objective-C的
- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator
迅速
func viewWillTransitionToSize(size: CGSize,withTransitionCoordinator coordinator: UIViewControllerTransitionCoordinator) {
coordinator.animateAlongsideTransition(nil,completion: {
if UIDevice.currentDevice().orientation.isLandscape.boolValue {
print("landscape")
} else {
print("portrait")
}
}
